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Method for preparing polyphenylene sulfide/graphene composite material through in situ polymerization

A technology of polyphenylene sulfide and composite materials, which is applied in the field of in-situ polymerization to prepare polyphenylene sulfide/graphene composite materials, can solve problems such as poor toughness, achieve improved thermal conductivity, simple preparation process, and expand the application range

Inactive Publication Date: 2014-12-24
XIAMEN KNANO GRAPHENE TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method introduces graphene in the polycondensation process of PPS, which can effectively improve the defect of poor toughness of PPS, and further improve thermal conductivity and other comprehensive properties, and obtain a polyphenylene sulfide / graphene composite material with excellent performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Preparation of graphene-sodium sulfide monomer dispersion

[0023] 480gNa 2 S·9H 2 0, anhydrous lithium chloride 30g, anhydrous sodium acetate 15g add the polymerization reactor that contains mechanical stirring device, add the solvent N-methylpyrrolidone of 3000ml simultaneously, the graphene dispersion liquid of 2000ml (solvent is N-methylpyrrolidone, The content is 1mg / ml), fill with nitrogen, close the reactor after exhausting the air, raise the temperature to 180°C, and perform azeotropic distillation for dehydration. After removing all the water of sodium sulfide, the graphene-sodium sulfide monomer dispersion liquid that can be used for polymerization reaction is obtained.

[0024] Step 2: Polycondensation reaction

[0025] Add 294g of p-dichlorobenzene to the above reaction kettle, then add 500ml of N-methylpyrrolidone, fill the kettle with nitrogen, close the reaction kettle, raise the temperature to 220°C for 3 hours, then raise the temperature to 2...

Embodiment 2

[0029] Step 1: Preparation of graphene oxide-sodium sulfide monomer dispersion

[0030] 480gNa 2 S·9H 2 O, anhydrous lithium chloride 30g, anhydrous sodium acetate 15g add the polymerization reactor that contains mechanical stirring device, add the solvent N-methylpyrrolidone of 4000ml simultaneously, the graphene oxide dispersion liquid of 1000ml (solvent is N-methylpyrrolidone , with a content of 1.2 mg / ml), filled with nitrogen, exhausted the air, closed the reactor, raised the temperature to 180°C, and dehydrated by azeotropic distillation. After the water of sodium sulfide is completely removed, a graphene oxide-sodium sulfide monomer dispersion that can be used for polymerization is obtained.

[0031] Step 2: Polycondensation reaction

[0032] Add 294g of p-dichlorobenzene to the above reaction kettle, then add 500ml of N-methylpyrrolidone, fill the kettle with nitrogen, close the reaction kettle, raise the temperature to 220°C for 3 hours, then raise the temperature ...

Embodiment 3

[0036] Step 1: Sodium Sulfide Dehydration

[0037] 480gNa 2 S·9H 20, anhydrous lithium chloride 30g, anhydrous sodium acetate 15g add the polymerization reactor that contains mechanical stirring device, add the solvent N-methylpyrrolidone of 5000ml simultaneously, charge into nitrogen, close reactor after air is discharged, be warming up to 180 ℃, dehydration by azeotropic distillation. When the water of sodium sulfide is removed, sodium sulfide that can be used for polymerization reaction is obtained.

[0038] Step 2: Polycondensation reaction

[0039] Add 294g of p-dichlorobenzene to the above reaction kettle, then add 500ml of N-methylpyrrolidone, 1000ml of graphene oxide dispersion (the solvent is N-methylpyrrolidone, the content is 1.2mg / ml) and fill the kettle with nitrogen, Close the reactor, raise the temperature to 220°C for 3 hours, and then raise the temperature to 260°C for 3 hours. Stop the reaction, lower the temperature, and deflate to obtain a graphene oxi...

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Abstract

The invention belongs to the technical field of nanometer polymer composite materials and particularly relates to a method for preparing a polyphenylene sulfide / graphene composite material through in situ polymerization. The method includes enabling graphene, sodium sulfate, assistant, solvent and dichlorobenzene to have in situ polycondensation reaction in a reaction kettle and conducting separation, purification and drying to obtain the polyphenylene sulfide / graphene composite material. By means of the method, raw materials are easy to obtain, the reaction condition is mild, the yield is high, the method is applicable to industrial production, the obtained composite material can improve the toughness of polyphenylene sulfide, meanwhile heat conduction performance, conductivity and other comprehensive performances are further improved, and the method has considerable economical value and provides a new way for the graphene modified polyphenylene sulfide.

Description

technical field [0001] The invention belongs to the technical field of nanometer polymer composite materials, in particular to a method for preparing polyphenylene sulfide / graphene composite materials by in-situ polymerization. Background technique [0002] Polyphenylene Sulfide (Polyphenylene Sulfide, abbreviated as PPS), also known as polyphenylene sulfide, polyphenylene sulfide, is the next polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, polybutylene terephthalate The sixth largest engineering plastic variety after ester. There are extremely dense benzene rings and sulfur atoms on its molecular main chain, so it is a thermoplastic resin with high rigidity and high crystallinity, high strength and modulus, good dimensional stability of products, small creep, and high Excellent fatigue resistance, good flame retardancy, high temperature resistance and outstanding bonding performance to glass, ceramics, steel, aluminum, nickel and other metals, the long-ter...

Claims

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Application Information

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IPC IPC(8): C08G75/02C08L81/02C08K3/04C08G75/0254
Inventor 赵立平洪江彬邱淑璇黄卫明
Owner XIAMEN KNANO GRAPHENE TECH CORP
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